Effects of Buoyancy on Heat Transfer on Circular Staggered Cylinders

Author

Sirisup, Sirod ; Tomtratoke, Saifhon ; Vannarat, Sornthep

Author_Institution

Large Scale Simulation Res. Lab., Nat. Electron. & Comput. Technol. Center, Pathumthani, Thailand

fYear

2009

fDate

15-17 May 2009

Firstpage

929

Lastpage

933

Abstract

Incompressible flow around a pair of circular cylinders in various staggered arrangements with heated upstream cylinder is investigated in this study. Three dimensional direct numerical simulation (DNS) has been performed with spatial discretization based on the spectral/hp element method with the Reynolds numbers of 200 and the Richardson numbers are varied from 0.05 to 2.0. The longitudinal separation to cylinders diameter ratio is set to 2.5 and 5.0 with transverse separation to cylinders diameter ratio is fixed at 1.0. The investigation focuses on the effects of buoyancy as well as cylinders placement on both flow structures and local heat transfer characteristics of both cylinders.

Keywords

convection; external flows; flow simulation; Reynolds numbers; Richardson numbers; buoyancy; circular staggerred cylinders; cylinders diameter ratio; direct numerical simulation; heat transfer; incompressible flow; mixed convection; transverse separation; Computational modeling; Computer simulation; Engine cylinders; Heat transfer; Interference; Laboratories; Large-scale systems; Numerical simulation; Power engineering and energy; Signal processing; Direct numerical simulation; Mixed Convection; Staggerred cylinders;

fLanguage

English

Publisher

ieee

Conference_Titel

2009 International Conference on Signal Processing Systems

Conference_Location

Singapore

Print_ISBN

978-0-7695-3654-5

Type

conf

DOI

10.1109/ICSPS.2009.184

Filename

5166927